When the Galileo Probe entered Jupiter's atmosphere, it was traveling at a speed of 106,000 miles per hour. This is the fastest impact speed ever achieved by a man-made object.

The Eisenhower interstate system requires that one mile in every five must be straight. These straight sections are usable as airstrips in times of war or other emergencies.

The smallest stamp in the world was issued in 1863 by the Columbian state of Bolivar and measured 9.5 x 8mm.

AMAZING FACTS